package com.hww.doc.framework.holder;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * @author yaxu.huang
 * @version 1.0
 * @date 2021-3-21
 * @since 1.0
 */
@Component
public class SpringContextHolder implements ApplicationContextAware{
	private static ApplicationContext appContext = null;
	
	/**
     * 通过name获取 Bean.
     *
     * @param name
     * @return
     */
	public static Object getBean(String name) {
		return appContext.getBean(name);
	}
	/**
     * 通过class获取Bean.
     *
     * @param clazz
     * @param <T>
     * @return
     */
	public static <T> T getBean(Class<T> clazz) {
		return appContext.getBean(clazz);
	}
	/**
     * 通过name,以及Clazz返回指定的Bean
     *
     * @param name
     * @param clazz
     * @param <T>
     * @return
     */
	public static <T> T getBean(String name, Class<T> clazz) {
        return appContext.getBean(name, clazz);
    }
	@Override
	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
		if(appContext == null) {
			appContext = applicationContext;
		}
	}
}
